Point(1) = {0, 0, 0, 0.25};
Point(2) = {1, 0, 0, 0.25};
Point(3) = {1, 1, 0, 0.25};
Point(4) = {1, 1, 1, 0.25};
Line(1) = {1, 2};
Line(2) = {2, 3};
Line(3) = {3, 4};
Line(4) = {4, 1};
Line(5) = {1, 3};
Line(6) = {4, 2};
Line Loop(7) = {5, 3, 4};
Plane Surface(8) = {7};
Line Loop(9) = {5, -2, -1};
Plane Surface(10) = {9};
Line Loop(11) = {6, -1, -4};
Plane Surface(12) = {11};
Line Loop(13) = {2, 3, 6};
Plane Surface(14) = {13};
Surface Loop(15) = {12, 14, 10, 8};
Volume(16) = {15};
